A dark pigment circle creates the illusion of a black hole opening up in the floor. And there are lots of mirrors: convex, concave and twisting.

British-based artist Anish Kapoor has brought his world of impressions, illusions and color to Berlin — creating a show for the city's Martin-Gropius-Bau that combines work from as early as 1988 with newly created pieces.

Kapoor has filled a floor of the 19th-century building and its glass-topped atrium with some 70 works grand and small. He said Friday that his art centers on the "interplay between the viewer and the material."